diff --git a/changelog.d/7398.docker b/changelog.d/7398.docker
new file mode 100644
index 000000000..dd2c6821c
--- /dev/null
+++ b/changelog.d/7398.docker
@@ -0,0 +1 @@
+Update docker runtime image to Alpine v3.11. Contributed by @Starbix.
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 93d61739a..9a3cf7b3f 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -55,7 +55,7 @@ RUN pip install --prefix="/install" --no-warn-script-location \
 ### Stage 1: runtime
 ###
 
-FROM docker.io/python:${PYTHON_VERSION}-alpine3.10
+FROM docker.io/python:${PYTHON_VERSION}-alpine3.11
 
 # xmlsec is required for saml support
 RUN apk add --no-cache --virtual .runtime_deps \